Degreasing and reeling method of cold rolled titanium strip coil before annealing

Abstract

The invention provides a degreasing and reeling method of a cold rolled titanium strip coil before annealing, which comprises the processes of cold rolling, degreasing, vacuum annealing or cover-type annealing. Under the condition that the rolling emulsion concentration is 0.8-2.5%, the temperature is 40-50 DEG C, the deformation rate in the process of rolling is 20-80% and the pass deformation rate is 3-10%, the strip coil is carried out 5-19 passes rolling to the target thickness, and is degreased and cleaned, different unit tension are used for reeling by aiming at different positions of cold rolled titanium strip coil when degreasing, the titanium stripe after reeling is packed and sent to a vacuum furnace or a bell furnace for heat treatment. According to the invention, the bonding rate of cold rolled titanium strip coil after vacuum annealing or cover-type annealing is substantially reduced, the problems of rolling, open coiling and scattered rolling can be avoided when the strip coil uses small unit tension for reeling.

Description

technical field [0001] The invention relates to a metal material processing technology, in particular to a method for degreasing and coiling a cold-rolled pure titanium coil before annealing. Background technique [0002] Cold-rolled pure titanium coils are mainly used in high-tech fields such as large civil aviation aircraft, military aircraft, nuclear power plants, and aerospace vehicles. Vacuum annealing and bell annealing are commonly used heat treatment methods. The high adhesion of pure titanium sheets makes the coil annealing Therefore, the cold-rolled pure titanium coils are coiled with a smaller unit tension before annealing, but this will easily lead to negative effects such as flat coils, loose coils, and loose coils. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a degreasing and coiling method for cold-rolled pure titanium coils before annealing, to reduce the high probability of annealing sticking ...

AI Technical Summary

Problems solved by technology

[0002] Cold-rolled pure titanium coils are mainly used in high-tech fields such as large civil aviation aircraft, military aircraft, nuclear power plants, and aerospace vehicles. Vacuum annealing and bell annealing are commonly used heat treatment methods. The high adhesion of pure titanium sheets makes the coil annealing Therefore, the cold-rolled pure titanium coils are coiled with a smaller unit tension before annealing, but this will easily lead to negative effects such as flat coils, loose coils, and loose coils.